383Q2'07 - CHE 383 Theory-Practice Quiz #2 Nov. 29, 2007...

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CHE 383 Theory-Practice Quiz #2 Nov. 29, 2007 Name_____________________________________ Lab day (circle): Monday Tuesday This quiz is based on material from the TLC, column chromatography, distillation, gas chromatography, ester, IR, and ferrocene experiments. It has 6 pages (including this cover page). 1. _________/9 2. _________/10 3. _________/5 4.a. _________/4 4.b. _________/4 4.c._________/6 5. _________/6 6. _________/8 7. _________/5 8.a. _________/10 8.b. _________/8 Total________/75
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2 1. Compounds A, B, and C give the Rf values shown below. Solvent R f of A R f of B R f of C 20% ethyl acetate/80% ligroin 0.34 0.29 0.10 a. If you use the 20% ethyl acetate/80% ligroin mixture to elute a mixture of A, B, and C in column chromatography, which of the three compounds A, B, or C will elute from the column first? b. Which compound is the least polar? c. How will the Rf values change if the solvent is changed to 40% ethyl acetate/60% ligroin? 2.a.
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This note was uploaded on 02/16/2010 for the course CHE 383 taught by Professor Staff during the Spring '08 term at SUNY Stony Brook.

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383Q2'07 - CHE 383 Theory-Practice Quiz #2 Nov. 29, 2007...

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